1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2001 Wind River Systems 5 * Copyright (c) 2001 6 * Bill Paul <wpaul@bsdi.com>. All rights reserved. 7 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 12 * NASA Ames Research Center. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by Bill Paul. 25 * 4. Neither the name of the author nor the names of any co-contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 39 * THE POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42 #include <sys/cdefs.h> 43 /* 44 * Driver for the National Semiconductor DP83861, DP83865 and DP83891 45 * 10/100/1000 PHYs. 46 * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf 47 * and at: http://www.national.com/ds/DP/DP83865.pdf 48 * 49 * The DP83891 is the older NS GigE PHY which isn't being sold 50 * anymore. The DP83861 is its replacement, which is an 'enhanced' 51 * firmware driven component. The major difference between the 52 * two is that the DP83891 can't generate interrupts, while the 53 * 83861 can (probably it wasn't originally designed to do this, but 54 * it can now thanks to firmware updates). The DP83861 also allows 55 * access to its internal RAM via indirect register access. The 56 * DP83865 is an ultra low power version of the DP83861 and DP83891. 57 */ 58 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/kernel.h> 62 #include <sys/module.h> 63 #include <sys/socket.h> 64 #include <sys/bus.h> 65 66 #include <net/if.h> 67 #include <net/if_media.h> 68 69 #include <dev/mii/mii.h> 70 #include <dev/mii/miivar.h> 71 #include "miidevs.h" 72 73 #include <dev/mii/nsgphyreg.h> 74 75 #include "miibus_if.h" 76 77 static int nsgphy_probe(device_t); 78 static int nsgphy_attach(device_t); 79 80 static device_method_t nsgphy_methods[] = { 81 /* device interface */ 82 DEVMETHOD(device_probe, nsgphy_probe), 83 DEVMETHOD(device_attach, nsgphy_attach), 84 DEVMETHOD(device_detach, mii_phy_detach), 85 DEVMETHOD(device_shutdown, bus_generic_shutdown), 86 DEVMETHOD_END 87 }; 88 89 static driver_t nsgphy_driver = { 90 "nsgphy", 91 nsgphy_methods, 92 sizeof(struct mii_softc) 93 }; 94 95 DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, 0, 0); 96 97 static int nsgphy_service(struct mii_softc *, struct mii_data *,int); 98 static void nsgphy_status(struct mii_softc *); 99 100 static const struct mii_phydesc nsgphys[] = { 101 MII_PHY_DESC(xxNATSEMI, DP83861), 102 MII_PHY_DESC(xxNATSEMI, DP83865), 103 MII_PHY_DESC(xxNATSEMI, DP83891), 104 MII_PHY_END 105 }; 106 107 static const struct mii_phy_funcs nsgphy_funcs = { 108 nsgphy_service, 109 nsgphy_status, 110 mii_phy_reset 111 }; 112 113 static int 114 nsgphy_probe(device_t dev) 115 { 116 117 return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT)); 118 } 119 120 static int 121 nsgphy_attach(device_t dev) 122 { 123 struct mii_softc *sc; 124 125 sc = device_get_softc(dev); 126 127 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &nsgphy_funcs, 0); 128 129 PHY_RESET(sc); 130 131 /* 132 * NB: the PHY has the 10BASE-T BMSR bits hard-wired to 0, 133 * even though it supports 10BASE-T. 134 */ 135 sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) | 136 BMSR_10TFDX | BMSR_10THDX) & sc->mii_capmask; 137 /* 138 * Note that as documented manual 1000BASE-T modes of DP83865 only 139 * work together with other National Semiconductor PHYs. 140 */ 141 if (sc->mii_capabilities & BMSR_EXTSTAT) 142 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 143 144 mii_phy_add_media(sc); 145 printf("\n"); 146 147 MIIBUS_MEDIAINIT(sc->mii_dev); 148 return (0); 149 } 150 151 static int 152 nsgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 153 { 154 155 switch (cmd) { 156 case MII_POLLSTAT: 157 break; 158 159 case MII_MEDIACHG: 160 mii_phy_setmedia(sc); 161 break; 162 163 case MII_TICK: 164 if (mii_phy_tick(sc) == EJUSTRETURN) 165 return (0); 166 break; 167 } 168 169 /* Update the media status. */ 170 PHY_STATUS(sc); 171 172 /* Callback if something changed. */ 173 mii_phy_update(sc, cmd); 174 return (0); 175 } 176 177 static void 178 nsgphy_status(struct mii_softc *sc) 179 { 180 struct mii_data *mii = sc->mii_pdata; 181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 182 int bmsr, bmcr, physup, gtsr; 183 184 mii->mii_media_status = IFM_AVALID; 185 mii->mii_media_active = IFM_ETHER; 186 187 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 188 189 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP); 190 191 if (physup & PHY_SUP_LINK) 192 mii->mii_media_status |= IFM_ACTIVE; 193 194 bmcr = PHY_READ(sc, MII_BMCR); 195 if (bmcr & BMCR_ISO) { 196 mii->mii_media_active |= IFM_NONE; 197 mii->mii_media_status = 0; 198 return; 199 } 200 201 if (bmcr & BMCR_LOOP) 202 mii->mii_media_active |= IFM_LOOP; 203 204 if (bmcr & BMCR_AUTOEN) { 205 /* 206 * The media status bits are only valid if autonegotiation 207 * has completed (or it's disabled). 208 */ 209 if ((bmsr & BMSR_ACOMP) == 0) { 210 /* Erg, still trying, I guess... */ 211 mii->mii_media_active |= IFM_NONE; 212 return; 213 } 214 215 switch (physup & (PHY_SUP_SPEED1 | PHY_SUP_SPEED0)) { 216 case PHY_SUP_SPEED1: 217 mii->mii_media_active |= IFM_1000_T; 218 gtsr = PHY_READ(sc, MII_100T2SR); 219 if (gtsr & GTSR_MS_RES) 220 mii->mii_media_active |= IFM_ETH_MASTER; 221 break; 222 223 case PHY_SUP_SPEED0: 224 mii->mii_media_active |= IFM_100_TX; 225 break; 226 227 case 0: 228 mii->mii_media_active |= IFM_10_T; 229 break; 230 231 default: 232 mii->mii_media_active |= IFM_NONE; 233 mii->mii_media_status = 0; 234 return; 235 } 236 237 if (physup & PHY_SUP_DUPLEX) 238 mii->mii_media_active |= 239 IFM_FDX | mii_phy_flowstatus(sc); 240 else 241 mii->mii_media_active |= IFM_HDX; 242 } else 243 mii->mii_media_active = ife->ifm_media; 244 } 245